Crypto Service TISCI Description¶

This chapter provides information on System Firmware API for Cryptographic Services. The available APIs are listed below.

Note

This document should be read alongside Cryptographic Services

TISCI Message ID	Message Name	Available in GP	Available in HS-FS	Previous Message Name
0x9040	TISCI_MSG_CRYPTO_AES_ENCRYPT	NO	YES	TISCI_MSG_SA2UL_AES_ENCRYPT
0x9041	TISCI_MSG_CRYPTO_AES_DECRYPT	NO	YES	TISCI_MSG_SA2UL_AES_DECRYPT

Note

The TISCI Message ID macros have been renamed. Please update your code to use the new names.

API Description¶

struct csp_aes_opn_req_data

Request for encryption/decryption

Parameter	Type	Description
ctx_address_lo	u32	Lower 32-bit memory location of the context
ctx_address_hi	u32	Higher 32-bit memory location of the context

struct csp_aes_opn_resp_data

Response of the encryption/decryption process

Parameter	Type	Description
tag	u8	The tag obtained during encyption/decryption

Usage:

Message Type	Normal
Secure Queue Only?	No

TISCI_MSG_CRYPTO_AES_ENCRYPT (0x9040U)

Message to encrypt a blob

struct tisci_csp_aes_req

Request for encryption/decryption

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_req	struct csp_aes_opn_req_data	Structure containing context address

struct tisci_csp_aes_resp

Response of the encryption/decryption process

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_resp	struct csp_aes_opn_resp_data	Structure containing service response

Usage:

Message Type	Normal
Secure Queue Only?	No

TISCI_MSG_CRYPTO_AES_DECRYPT (0x9041U)

Message to decrypt a blob

struct tisci_csp_aes_req

Request for encryption/decryption

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_req	struct csp_aes_opn_req_data	Structure containing context address

struct tisci_csp_aes_resp

Response of the encryption/decryption process

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_resp	struct csp_aes_opn_resp_data	Structure containing service response